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[109.81.26.156]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e1323770sm45183583f8f.32.2026.02.02.05.15.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Feb 2026 05:15:22 -0800 (PST) Date: Mon, 2 Feb 2026 14:15:21 +0100 From: Michal Hocko To: Akinobu Mita Cc: Joshua Hahn , linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, hannes@cmpxchg.org, david@kernel.org, zhengqi.arch@bytedance.com, shakeel.butt@linux.dev, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, ziy@nvidia.com, matthew.brost@intel.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, bingjiao@google.com, jonathan.cameron@huawei.com, pratyush.brahma@oss.qualcomm.com Subject: Re: [PATCH v4 3/3] mm/vmscan: don't demote if there is not enough free memory in the lower memory tier Message-ID: References: <20260127220003.3993576-1-joshua.hahnjy@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Btw. collecting /proc/vmstat during this test could give you a better insight into what is going on. Especially reclaim stats (pgscan*, pgsteal*, pgdemote*, workingset*). -- Michal Hocko SUSE Labs